Armature-winding machine



Jim 2m. 1925. 1,5235% P. E. CHAPMAN ARMATURE WINDING MACHINE Filed March 18, 1921 4 Sheets-Sheet l W ZLM J 20. 1925. v Lszww P. E. CHAPMAN ARMATURE WINDING MACHINE Filed Marchv I8, 1921 4 Sheets-Sheet 2 P.E.CHAPMAN ARMATURE WINDING MACHINE Filed March 18 1921 4 Sheets-Sheet 3 J 2@. 1925. 1,523,63fi

P. E. CHAPMAN ARMATURE WINDING MACHINE Filed March 18, 1921 4 Sheets-Sheet 4 lu-lumul Patented .Fan. 26, 1925.-

PENROSE E. CHAPMAN, 01; ST. LOUIS, MISSOURI.

ARMATUBE-WINDING MACHINE.

Application filed March 18, 1921. Serial No. 453,363.

To all whom it may concern:

Be itknown that I, PENROSE E. CHAPMAN, a citizen of the United States, residing at St. Louis, State of Missouri, have invented a certain new and useful Improvement in Armature-Winding Machines, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

The object of my invention is the produc tion of an armature winding machine of greater output.

I accomplish this by, 1st constructing an armature winding machine head or a plurality of heads in such a manner that, two independent coils may be wound at the same time, thus cutting winding time in half.

2nd: By providing an indexing device which shall be quicker than indexing by hand.

3rd: By providing means for a quick discharge of the leads.

4th: By providing means whereby the head of the armature may be made excessively small without pounding.

In the drawings Figure 1 is a general elevation of my device, motor driven as applied to a simple form of armature Winding head.

Figure 2 is a perspective of the simple form of primary Winding head shown as 4 in Figure 1.

Figure 3 is a tertiary winding head shown as 3 in Figure 1.

Figure 4 is a cross section of the same showing the indexing mechanism.

Figure 5 is a primary winding head shown as 5 in Figure 1.

Figure 6 is the oscillating mechanism shown as 35 in Figure 1.

Figure 7 is a cam contained therein.

Figure 8 and Figure 9 are combined cams and gears.

Figure 10 is a modified form of lead discharger for manual operation.

10 is a motor of any suitable characteristics 10 being a controller for handling the said motor. 11 is the frame of a winding lathe, I provide a double tension device 12 and reel holder 12 suitable for handling the two spools 13 and 14 tensioning two wires 13 and 14 therefrom to the winding heads 3, 4 and 5. This tension device and reel holder, and other parts illustrated will not be described or claimed herein as they form the subject of other patents and applications.

An armature core is shown as 17. To make it possible to wind two separate and distinct coils at the same time in diiierentsets of slots it is desirable to provide primary and secondary winding heads 4 and 5 for head and tail end of the winding lathe 11 as shown in more detail in the Figures 2, 4 and 5.

For the purposes of this application I will take the term winding head to mean any portion of an armature winding machine,

which engages the armature to be wound and which has means for guiding the wire in to place on the said armature.

As it is desirable sometimes to use more than one winding head I shall distinguish them as follows:

Primary winding hcad..Is that head which would be most essential, customarily attached to the head stock of the winding lathe and usually the one on the left, as the operator faces the machine. Types of such heads are shown in Figure 1 as 4, and in Figures 2, 4 and 11.

Secondary winding head.-The winding head which is opposite to the primary usually but not necessarily attached to the tail.

stock of the winding lathe. Such a head is shown in Figure 1 as 5 and in Figure 5.

Tertiary winding heaoL- ln this application a 3rd winding head placed betweenthe said primary and secondary heads, shown in Figure 1 as 3, and in detail as Figure 3.

In some cases it is necessary to supply a tertiary head 3 in Figure 1, with further details in Fi ure 3. The primary head 4 is attached to s raft of the motor 10. Figures 2 and 4 are details of the head 4, and an indexing and lead discharging device are carried by it. The armature 17 is retained between the faces 4 and 5 of the primary and secondary winding heads. On the winding head 4, a spotting key 15 is provided at a suitable location to enter a slot of the armature core 17, to prevent its rotation. This key at the time of indexing the armature is withdrawn from the armature slot by means of a cam shown as notch 16 in ram 18, which carries a pawl 19 adapted to engage a slot in the armature core, a handle 18 may be provided for the ram which may be returned to the starting position by any suitable means as spring 21. Paw] 19 is actuated by any suitable means as the. spring 20 which presses it against the armature core 1 The ram 18 is so set by the nut 18"that the pawl 19 is just above .or behind one of the slots in the armature core when at rest, or at least is at the upper edge ,of the slot which ithappens to be resting in. I

When the pawl is de ressed the spotting key 15 is first released y the cam notch 16 in the ram 18, pawl 19 then engaging one of the slots of'the armature core carries it around any suitable number of slots, usually one The pawl 19 need not be suspended on one end as shown, but may assume any of the forms usual to such devices, nor do the pawl 19 and key 15 need to be in the same relative position.

As the indexing action may be very, very rapid, the armature core may acquire-such a momentum as to coast'past the slots 'it is desired to wind in. To prevent this I reengage the spotting key 15 with one of the armature slots at the end of the pawl travel, by providing a cam notch 16 at a point suitable to allow the key 15 to enter the next or desired slot, thus bringing armature 17 to rest at the correct position for winding. The spring 15 returns the key 15 to its seat.

Wire directin guides 22 and 22 may e provided. Ont e back of guide 22, I pro-. vided a snubbing pin 22" over which the leadforming wire is looped to form the leads. The term snubbing pin is understood to include all forms of projection over which a lead may be formed or to which the may be secured.

When t e coils are wound it is desirable to disengage these lead loops from the snubhing pin 2 I accomplish this disengaging, automatically, by providing cam notch 23 in the ram 18, which actuates a stripper 24 and 25, when the handle 18' is depressed cam notch 23 moves the stripper 24-25 out a sufficient distanceto pull any lead that may be hooked over the snubbing pin 22' off said pin.

Owing to the normal position of the pawl 19, being a little behind the slot this action is enabled to occur before the armature starts to rotate. The above combination makes it possible with one stroke on the handle 18' to disengage the lead from they snubbing pin, release the key 15, index the armature, replace the key and upon release of the handle 18 resetthe whole device ready to repeat the operation.

I am aware that there have been many attempts to index armatures in armature winding machines, but they have all acted.

von something other than the'slots of the an device overcomes these possibilities of error,

eliminates the skill otherwise necessary in 7 setting and simplifies the machine.

. In order to facilitate releasing the lead of the armature from snubbing pin 22" I prefer to cut out a groove in the active side thereof and that the stripper 25 be proportioned to travel in this groove. I .show this more clearly in the modified form shown as Figure 10.

In Figure 10 the stripper 64 is shown adapted for manual ope-ration being pivoted as shown at its lower end to any convenient portion of a winding head as wing 63; The grooved section of snubbing pin 22" accommodating the stripper finger 65. In many instances it has been the custom to twist the leads of an arniatiire, a slow operation that it is desirable to dispense with.

I arrange to dispense with the twisting of the leads in this device by providing a lead catch 62 underwhieh the slotside of they lead forming wire 17 a may be hooked, holding it down toward the bottom of the slot 1 7 the'wire 17 having been advanced to the slot to be wound previously to indexing the armature will then be wound under the coil 17" and thus secured, the lead side 17 of the lead being laid down across the armature head will also be wound under by the head of the coil 17" thus securing both sides of the armature lead and making it unncces- 1 sary tot'wist, resulting in greater speed of forming, greater speed in scraping for connection to the commutator and less injury to the insulation of the leads where they emerge-from the armature.

While the secondary winding head Figure 5 is only shown supplied with plain snubbing pins 26 and 27 it is obvious that the indexing and lead handling devices just described may-be attached to either the primary or secondary heads or may be attached to other winding devices if desired.

In order to make small heads it is necessary to spread the coils on the ends as thin as possible, and if the armature coils are wound on a com aratively short chord such as the machine epicted in the drawings proportioned to wind, it may become neces sary to feed the wire so that it will lay very close to the shaft which may require feeding so far over that the shaft would actually em gage the winding wire and give trouble, or that itwould not drop in the slot, but wind up on the top of the armature tooth, to overcome this difliculty I apply a tertiary head 3 shown in detail in' Figure 3.

I have shown this tertiary head proportioned to guide the wire into the same slots as the primary and secondary heads, any or all heads may of course be proportioned to l Ill) act on the same or different slots, winding either more or less than two coils at a settin or coils in other relative position.

wing to the fact that I am feeding wire to the armature core on both sides of this tertiary head, it would be impossible to support the same directly on either the primary or secondary heads, I therefore find it convenient to attach said tertiary head to the armature shaft 17. In order that this head may be slipped over the armature shaft at an angle sufficient to clear the core, I prefer to stagger the opposing halves of bearing 28 as shown which permits a solid bearing together with the ability to slip shaft through it at an angle.

A half bearing 29 may be provided for the other end with a suitable catch as spring catch 29 to retain it in position, the portions of this tertiary head which guide the wire into the slots are numbered 30 to 30" inclusive. Both for the matter of support and for the purpose of preventing the wire from becoming fouled with shaft, I connect the winding faces 30 to 30", to bearing 28 and 29 by arms as shown.

It is of course necessary to locate this tertiary head with reference to slots to be wound. I have found it preferable to arrange a small roller 31, so that it may roll over the face of the armature and seat into a slot. This roller 31 is supported by the V block 32 which is in turn actuated by spring 83, this arrangement of the tertiary head on the shaft of the armature to be wound locating it by the roller 31 makes manipulation thereof unnecessary during indexing of the armature. If properly proportioned,

when the armature is indexed it will con-.

tact with a. head, the roll 31 will roll ahead into the proper slot aligning the guiding edges 30 to 30" with the winding slots.

In order to make short heads on the armature I spread the wire thereon as much as possible. It has been customary until the advent of this invention to pound the heads of the coils, a time wasting operation inducive of many short circuits. To save this time and decrease the danger of short circuits I feed the wire to the winding progressively distributing the wire close to and away fromothe shaft thus spreading the armature coils on the head a maximum amount producing heads of minimum length.

To accomplish this distribution of the wire on the head, I prefer to feed wire under and around the forming rollers 34 and 34 which are made to travel away from and towards each other by the mechanism shown in the gear box 35 Figures 1, 6, 7,

8 and 9. prefer to drive this mechanism. by an extension of the turn counter shaft 36, through gimble joint 37, a non-reversible. dental clutch 38, and the pinion 39 cam lug 40.

shown in sectional Figure 6. This pinion drives gear 40. Gear 40 carries cam 41, this cam in turn moves actuating slide 42 which slide carries one of the forming rollers 34, which I prefer to use for actuating the wire. The slide 42 has a rack cut on its under face which meshes with gear 43, gear 43 in layers.

It is sometimes desirable in some coils of an armature usually the finishing coils" that this spreading of the coils be altered or discontinued. It is frequently desirable particularly in finished coils that the wire be fed as far away from the shaft as possible.

To do this I prefer to shift the actuation of slide 42 from primary feeding cam 41 to a differently proportioned ,or blank secondary cam such as is shown a washer 4 To this end I supply a gear 46 differential to the gear 40 which will have a slow relative motion one to the other. In order to throw the cam 41 out of engagement with the slide 42 I lower it by cutting in one of the differential gears preferably 46, one

ential gears brings them in opposition, this will allow the gear 40 and cam 41 to drop an amount equal in height to that of the The cam or washer 47 will then be depressed by the spring 48 when the cam 41 reaches an appropriate position, and

will drop behind the slide 42 holding it in the desired position or actuating it as desired while the desired number of coils are wound.

It is obvious that many other modifications can be made of my device as described without departing from the spirit of my invention.

Having now described my invention I wish to claim.

1. In an armature winding machine a primary winding head adapted to guide wlnding wire into a pair of slots, with a secondary winding head adapted to guide wire into another pair of slots.

2. In an armature winding machine the combination of primary and secondary winding heads acting on difl'erent pairs of slots, with means for feeding wire to each of said heads simultaneously.

In an armature winding machine the combination of, a primary and secondary winding head, with a tertiary winding head adapted to winding jointly therewith.

teetl' iof said armature,

I. In an armature winding machine, the combination of,"a primary, secondary and a tertiary winding head with means for feed ing wire to a plurality of pairs of armature slots simultaneously.

5. In an armature winding machine, a ter-' tiary winding head, combining means for guiding wire into slots of an armature with means for securing said tertiary head to said armature.

6. In an armature winding'machine, a tertiary winding head, combining means for guiding wire into slots of an armature, means for securing said head to said armature with means for locating said head with reference to the slots of said armature.

7. In an armature winding machine, a tertiary winding head, combining means for guiding wire into slots of an armature, with means for locating said head with reference to slots of said armature, consisting of a roller faced ratchet carried by said tertiary head.

8. In an armature winding machine, the combination of means for winding an armature with means for indexing said armature acting against, the teeth thereof.

9. In an armature winding machine, the combination of means for winding an armature, with means for indexing an armature consisting of a pawl acting against the teeth of said armature.

10. In an armature winding machine, the

combination of means for windingan armature and means forindexing said armature acting against the teeth thereof with means for actuating said indexing mechanism.

11. In an armature winding machine, the combination of means for winding an armature, and means for indexing acting against the teeth of said armature with a releasable spotting key for securing said armature against rotation. p

12. In an armature winding machine,the combination of, means for winding an armature, means for indexing acting against the teeth of said armature and a spotting key with means for releasing said key during the action of said means for indexing.

13. In an-armature winding machine the combination of means for winding an-armature, means for indexing acting against the and a spotting key withmeans for disengagingsaidkey from said'arina-ture at the beginning of travel of."

the said means for indexing and reengaging said key at the end of said travel.

I operable cam surfaces for 14. In an armature winding machine, the" combination of, means for armature, and' a spotting key-[with jointly actuating said indexing and key members.

15. In a winding machine, means for winding wire, means for forming leads to winding, means the teeth of said said winding consisting of a snubbing pin over which the lead may be formed combined with a stripper adapted to disengage the said lead from said snubbing pin:

16. In a winding machine, means for winding wire, means for forming leads to said winding, consisting of a snubbing pin over which the lead may be formed, a stripper for disengaging said lead from said pin combined with means for actuating said stripper.

17. 111 a winding machine the combination of means for winding wire, with a grooved lead snubbing pin. a

18. In a winding machine the combination of means for winding wire, a grooved snubbing pin and a stripper acting in said groove for disengaging leads from said pin.

1.). In an armature winding machine, the combination of a snubbing pin for lead forming, a stripper for disengaging said lead, with an indexing mechanism.

20. In an armature winding machine, the combination of -a snubbing pin for lead forming, a stripper for disengaging said lead,'and an indexing mechanism withmeans for jointly actuating said stripper and said indexing mechanism.

21. In an armature winding machine, the combination of means for winding an armature, means for indexing said armature, and

a removable spotting key both acting against the teeth of said armature with means for jointly actuating said devices.

22. In an armature winding machine, the

combination of, means for winding an armature, means for indexing and keying said armature, both acting against the teeth of said armature. means for disengaging leads from a snubbing pin, with means for actuating said devices.

23. In an armature winding machine, the

. combination of means for winding an armature, with means for holding the slot side of an armature lead in position to be wound under a coil.

24. In an armature winding machine, the combination of means for winding an armature with a lead catch so placed that the slot side of an armature lead may be held by it in position to be over wound by an armature coil.

25. In an armature winding machine, the combination of a winding head having means for directing wire into slots of an armature, with means acting on the wire externally to the slots of said armature for transversely feeding said windin wire.

26fIn an armature winding m chine, the combination of a pl rality of winding heads for directing wire idto the slots of an armature, means for supplying a plurality of Y winding wires to said heads, with means for transversely feeding said winding wires. 27. In an armature winding machine, the

messes combination of a winding head .having means for directing wire into the slots of an armature consisting of a cam actuating said transverse feed and means for jointly operating said cam and said winding head.

28. In an armature winding machine, the combination of a winding head having means for guiding the wire into the slots of an armature, and a transverse feeding cam, with means for coupling said winding and feeding devices, having a non-reversable dental coupling in series therewith.

29. In a Winding machine, an intermittent transverse feeding device combining a feeding cam, an actuating slide operated by said cam with means for disengaging said cam from said slide consisting of a pair of difierential gears one of which drives said feeding cam and an axially operating cam coacting with a mating cam carried by the other diflerential gear substantially as described.

30. In a winding machine, an intermittent transverse feeding device combining a primary feeding caman actuating slide operated by said cam, an axially operating pairof disengaging cams operated by difierential gears which disengage said feeding cam, with a secondary cam which is brought into engagement with said slide when said primary feeding cam is shifted substantially as described.

31. In a winding machine, the combination of means for winding wire with means for oppositely and transversely feeding a plurality of winding wires, comprising a plurality of actuating slides, coupled together by means of racks on said slides which mesh with a reversing gear placed between said slides, a cam actuating said slides and means for coupling said winding and said feeding mechanism.

32. In an armature winding machine the combination of a tertiary head with a supporting bearing the opposing halves of which are staggered with reference to each other.

In testimony whereof I hereunto aiiix my signature in the presence of two witnesses, this 15th day of March, 1921.

PENROSE E. CHAPMAN.

Witnesses:

JUSTINE E. KossMAN, H. R. Eeenns. 

